The importance of a good photo edition

We start with this image:

As you can see, the colors and the background aren't really contrasted as they were in real life. This is because the camera doesn't capt them at all.
Opening Photoshop CS6, the first thing is to cut the photo if we want to. If not, let's see if we can change the colors.
I don't like the yellow background, so I changed it with "Correccion selectiva", and put "yellow" on 0% (because it is on 50%). Then, adjust "red" and "black", so it will be brighter or darker.
Having it adjust, the next thing is to contrast the colors. We click on contrast and there you have two things to change: contrast and brighten.
Looking for the best colors, I put contrast on a 95, and brighten on a 5.
We should unify the layers (because every contrast you make, creates a new layer), and save it with the same name of the first picture.
The photo we obtain is this;

It has not too many changes, but it looks better now, doesn't it?